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Updated: May 23, 2026

Transduction-Transplantation Mouse Model of Myeloproliferative Neoplasm
Published on: December 22, 2016
Breakthroughs in myeloproliferative neoplasms
Fabio P S Santos1, Srdan Verstovsek
1Hematology and Stem Cell Transplantation, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
Abstract:
The discovery of the JAK2V617F mutation ushered the field of Philadelphia-negative myeloproliferative neoplasms (MPNs) into the era of targeted therapy. Currently, there are several JAK2 inhibitors in clinical trials for patients with MPNs, particularly for patients with myelofibrosis (MF). These drugs act by blocking the proliferation of neoplastic cells by disrupting the JAK2-STAT signaling and by abrogating inflammatory cytokine signaling which is dependent on JAK kinases. Therapy with JAK2 inhibitors can improve splenomegaly and debilitating constitutional symptoms in great majority of MF patients, improving greatly their quality of life. Long-term follow-up will reveal whether these drugs can also prolong survival by better controlling signs and symptoms of the MF. There are other compounds in clinical trials for MPNs, including the new immunomodulatory drug pomalidomide, and inhibitor of mammalian target of Rapamycin everolimus. In this article, we briefly review the latest therapeutic advances in the field of Philadelphia-negative MPNs.
Insights
Targeted therapies, including JAK2 inhibitors, are improving quality of life for Philadelphia-negative myeloproliferative neoplasms (MPNs) patients, particularly those with myelofibrosis (MF). Further research will determine if these treatments also prolong survival.
Area of Science:
- Hematology
- Oncology
- Molecular Biology
Background:
- The JAK2V617F mutation discovery enabled targeted therapy for Philadelphia-negative myeloproliferative neoplasms (MPNs).
- JAK2 inhibitors are crucial in treating myelofibrosis (MF), a type of MPN.
- These inhibitors target JAK2-STAT and inflammatory cytokine signaling pathways.
Purpose of the Study:
- To review the latest therapeutic advancements in Philadelphia-negative MPNs.
- To highlight the role of JAK2 inhibitors in managing MF symptoms and quality of life.
- To discuss other emerging treatments for MPNs.
Main Methods:
- Review of current clinical trials and therapeutic strategies for MPNs.
- Analysis of the mechanism of action for JAK2 inhibitors.
- Evaluation of the impact of JAK2 inhibitors on MF symptoms.
Main Results:
- JAK2 inhibitors significantly improve splenomegaly and constitutional symptoms in most MF patients.
- Improved quality of life is a key benefit of current JAK2 inhibitor therapy.
- Long-term survival benefits are under investigation.
Conclusions:
- Targeted therapies, especially JAK2 inhibitors, represent a significant advancement in MPN treatment.
- These therapies offer substantial symptomatic relief and improved quality of life for MF patients.
- Ongoing research aims to confirm long-term survival benefits and explore novel therapeutic agents.
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